Flyer for multiple twisting spindles



Jan. 20, 1970 J. FRENTzEL-BEYME y r3,490,220

FLYER FOR MULTIPLE TWISTING SPINDLES 5 Sheets-Sheet l Filed Feb. 17, 1969 f/G. I

Jan 20, 1970 J. FRENTZELBEYME 3,490,220

FLYER FOR MULTIPLE TWISTING SPINDLES Filed Feb. l?, 1969 5 Sheets-Sheet 2 Jan- 20, 1970 1. FRENTzEL-BEYME 3,490,220

FLYER FOR MULTIPLE TWISTING SPINDLES Filed Feb. 17, 1969 5 Sheets-Sheet 5 f s ze so iw l i. 29 l' *1' 2'@ l I3 f Jan 20, 1970 J. FRENTzEL-BEYME 3,490,220

FLYER FOR MULTIPLE TWISTING SPINDLES Filed Feb. 17, 1969 5 Sheets-Sheet 4 @Wax/ron. Wa/rm; mn/zee me Jan.' 20, 1970 J, FRENTzEL-.BEYME 3,490,220

I FLYERFOR MULTIPLE TWISTING SPINDLES 5 Sheets-Sheet 5 Filed Feb. 17, 1969 United States Patent O U.S. Cl. 57-58.83 13 Claims ABSTRACT OF THE DISCLOSURE A flyer structure for a textile spindle in which around the spindle shank there is provided an at least partially liquid fllled annular housing having rotatably arranged therein a blade wheel rotatable in response to a rotation of the flyer.

With multiple twist spindles it is known to withdraw the threads to be twisted upwardly from a stationary delivery bobbin or from a plurality of axially superimposed delivery bobbins, and thereupon to pull the threads to be twisted axially downwardly through the hollow spindle shank. In the interior of the hollow spindle shank, the threads usually pass through a thread brake.

The delivery bobbins involved in such circumstances are usually doubled crosswound bobbins with which the unwinding point of the threads from the mantle surface continuously moves over the entire length of the bobbin back and forth. Since the withdrawing force from the outer mantle of the bobbin is directed at an incline upwardly and inwardly, it is necessary in order to avoid a friction between the thread and the upper outer edge of the delivery bobbin, to take steps by which the threads are unwound rst at an incline upwardly and outwardly and then are deviated approximately within the region of the upper end face of the delivery bobbin in a direction at an incline upwardly and inwardly toward the upper end of the hollow spindle shank. Inasmuch as furthermore the unwinding point of the threads in view of the cross-windn g of the delivery bobbin is continuously displaced over the height of the bobbin, the free thread length between the unwinding point and the deviation at the upper end of the hollow spindle shank varies so that in this area a different thread tension is encountered which may bring about a fluttering and even a running away from each other of the individual threads.

In order to overcome the difficulties encountered during the unwinding of the thread, drag wings or flyers are employed for the overhead unwinding of doubled crosswound bobbins on multiple twisting spindles. These drag wings or flyers are freely rotatably journalled about the upper end of the respective hollow spindle shank and at their free end which extends above the upper end face edge of the delivery bobbin are provided with a thread guiding eye by means of which the threads during the unwinding process are pulled ilrst at an incline upwardly and outwardly and from the eye on are subjected to a pull in the direction at an incline upwardly and inwardly.

In View of the cross-winding of the delivery bobbin, the free thread length between the unwinding points and the points of deviation of the threads is subjected to a continuous change. This brings about a non-uniform and jerky rotation of the drag wing or flyer which is dragged by the thread so that the drag wing or flyer may, for instance, run ahead of the thread with the result that loops will form.

In order to prevent such running ahead or trailing of the drag wing or flyer with regard to the unwinding point of the threads from the delivery bobbin, and thus to as- 3,490,220 Patented Jan.-20, 1970 sure a relatively uniform thread withdrawal or thread unwinding, the heretofore known drag wings or flyers are somewhat braked during their rotation. This may be effected, for instance, by causing the lower end face of the hub of the drag wing or flyer to be seated on an annular braking surface. Inasmuch as, depending on the speed of the spindle and the type of thread to be processed, different braking forces are required, the material of the friction surface may have a coefllcient of friction which is adapted to the respective situation. A change in the braking force is also possible by loading the bearing hub by portable weights in axial direction.

Inasmuch as the exchange of weights to be placed upon the bearing hub or the variation of the coeflcient of friction of the material braking the bearing hub is time consuming and expensive, it has been suggested so to design the bearing hub that it can be pressed against the bearing surface by magnetic force and in this way may be lifted off the braking surface up to a floating position. In this way the desired braking values can be obtained easier and faster. However, also this type of drag wing or flyer will require a brake lining by means of which at one adjustment during the rotation of the drag wing or flyer there can be obtained only one certain braking value. Such brake lining is advantageous for braking the drag wing or flyer to a certain speed of rotation, but it is unsuitable for preventing a running ahead or trailing ofhthe drag wing or flyer. It will be appreciated that when the thread tension is increased and thus the ordinary speed of rotation of the drag wing or flyer is accelerated, a greater braking force is desired, whereas when the tension of the thread is reduced and thus the ordinary speed of rotation of the drag wing or flyer is decreased, it is desired to reduce the braking effect upon the drag wing or flyer to a minimum or possibly to zero.

Starting with a drag wing or flyer on multiple twisting spindles which are journalled for free rotation about the upper end of the hollow spindle shank, for the unwinding of the thread, especially of crosswound bobbins, it is an object of the present invention so to design the journalling of the drag wing or flyer that the differences in the speed of rotation of the drag wing or flyer due to changes in the thread tension during the running ahead or trailing of the drag wing or flyer will be reduced.

It is another object of this invention so to design the journalling of the drag wing or flyer that an impuse caused by the thread in view of a thread tension peak, which tends to bring about a running ahead of the drag wing or flyer, is counteracted by an impulse of the same magnitude.

It is another object of this invention to provide a drag wing or flyer arrangement as set forth in the preceding paragraphs, in which an impulse causing the drag wing or flyer to trail, is counteracted by an impulse of the same magnitude, while the drag wing or flyer during a uniform unimpeded thread withdrawal will not be exposed to any material interference during its rotation.

These and other objects and advantages of `the invention will appear more clearly from the following specification in connection with the accompanying drawings, in which:

FIG. 1 illustrates in section a drag wing or flyer according to the invention mounted on the bobbin carrier of a two-for-one twisting spindle, which drag wing or flyer has a bearing hub in the form of a blade wheel which immerses from above into an annular chamber.

FIG. 2 is a section through a modified drag wing or flyer on the bobbin carrier of a two-for-one twisting spindle in which the annular housing carried by the bobbin carrier is closed on all sides.

FIG. 3 illustrates a section taken along the line IlI-III of FIG. 2.

FIG. 4 is a section through a further embodiment of a drag wing or yer which is similar to that of FIG. 2.

FIG. 5 illustrates in section the drag wing or flyer of FIG. 2 with an annular housing extending around said drag wing or tlyer and having its bottom displaceable in axial direction.

FIG. 6 shows a section through the drag wing or flyer of FIG. 2 but with the difference that the annular housing forms one piece with the bobbin carrier, the liquid receiving chamber of said annular housing being variable by displacement ofa piston received by the hollow shank.

FIGS. 6a and 6b respectively show cutouts from the hollow shank according to FIG. 4 with two embodiments of the piston displaceable in the hollow shank for varying the volume of the iiuid receiving chamber of the annular The present invention is characterized primarily in that below the drag wing or ilyer there extends around the hollow spindle shank an annular housing which is at least partially filled with liquid and in which a blade wheel is rotatable about the inner Wall of the annular housing, said wheel rotating together with the drag wing or yer. In this way, at constant uniform speed of rotation of the drag wing or yer, the drag wing or iiyer will in view of the only minor turbulence of the liquid caused by the blades of the blade wheel be subjected only to a minor braking effect. If, however, the thread, for instance, in view of an increase in the thread tension exerts a higher torque upon the drag wing or yer, the blades of the blade wheel will in view of the resistance encountered in the liquid and in view of the increased turbulence of the liquid prevent the drag wing or flyer from materially increasing its speed of rotation. Consequently, the drag wing or flyer will hardly be able to run ahead or trail when the torque action upon the drag wing or flyer drops.

According to a further development of the invention, the bearing hub of the drag wing or ilyer mayextend axially downwardly into the annular housing and may be rotatably mounted on the inner wall of the housing and may furthermore within said annular housing be provided with blades to form a blade wheel. Thus, the bearing hub of the drag wing or tlyer immerses into the liquid-filled annular housing whereby a safe transmission onto the drag wing or flyer of the retarding force will be assured which acts upon the hub in view of the turbulence in the liquid caused by the blades of the blade wheel.

When the bearing hub of the drag wing or yer itself immerses at least partially into the liquid-{illed annular housing, the latter must necessarily be designed open at the top to such an extent that a blade wheel can be inserted from the top. In some instances, when4 a drag Wing or iiyer is employed, it may, however, be advantageous to close the annular housing at the top. In such instances, in conformity with the present invention, the blade wheel may be freely rotatably mounted in the annular housing which is closed in a liquid-tight .manner on all sides. In this instance the blade wheel may be rotated by magnetic force by the drag wing or yer when the latter is rotated. With such an arrangement there will be no danger that liquid will during the course of the twisting process be splashed toward the outside so that lint could get mixed in with the liquid.

Depending on the processing of the respective yarn number involved and also depending on the speed at which the spindle rotates, it may be advantageous to provide means for controlling the magnitude of the torque exerted by the drag wing or flyer upon the thread. This may be realized by varying the viscosity of the liquid, for instance, by using water, oil, or glycerine, or the like. According to another possibility, the angle of attack of the blades may be variable in conformity with the present invention.

Referring now to the drawings in detail and the arrangement of FIG. 1 thereof in particular, FIG. 1 shows a hollow shank 1 pertaining to a delivery bobbin carrier not shown in the drawings. The conically upwardly tapering delivery bobbin sleeve 3 of the delivery bobbin generally designated 4 is supported by the bobbin carrier `by means of a rubber ring 2 located in an annular groove 1a of semicircular cross-section. Centrally arranged in the `hollow shank 1 is a spindle pipe 5 over the upper edge of which the thread 6 withdrawn from the delivery bobbin 4 in upward direction is deviated downwardly and is passed through the spindle pipe 5 and the hollow shank 1. Around said spindle pipe 5 and coaxially arranged with regard thereto is the bearing hub generally designated 7 of the drag wing or iiyer 8 which, in conformity with the embodiment of FIG. l, is upwardly pivotable about the pivot 9 while otherwise being rigidly held on the bearing hub 7. The free end of the drag wing or flyer 8 is provided with a thread guiding eye 10.

According to FIG. 1, the bearing hub 7 of the drag wing or flyer 8 extends axially downwardly into the annular housing 1l which is open at the top and which is non-rotatably supported by the end face 12 of the hollow shank 1 by means of the pin 13 which is eccentrically located at the bottom of the annular housing 11 and engages a bore of the hollow shank 1. The bearing hub 7 is supported radially on the inner Wall and axially on the bottom of the annular housing 11 and extends by means of the annular shoulder 14 over the annular housing 11 while closing said annular housing with the exception of a narrow air gap.

That portion of the bearing hub 7 which extends axially into the annular housing 11 is for purposes of forming a blade Wheel provided with circumferentially distributed blades 15 which along their entire length are immersed into the liquid in the annular housing 11.

When the thread 6 which is passed through the eye 10 of the drag wing or yer 8 is being Withdrawn from the delivery bobbin 4, the drag wing or flyer 8 is rotated about the spindle pipe 5. The blades 15 of the blade wheel 'will thus bring about a rotation of the liquid in the annular housing 11. The drag wing or flyer 8 will then substantially in an unimpeded manner rotate freely about the spindle pipe 5.

If, in view of variations in thethread tension, the dragging force exerted by the thread upon the drag wing or flyer 8 is changed in its direction of rotation or opposite thereto, the resistance encountered by the blades 15 in view of the liquid will prevent the drag wing or flyer 8 from increasing its speed to any material extent or from reducing its speed to any material extent. Thus, a running ahead or trailing of the drag wing or flyer 8 is prevented for all practical purposes.

The liquid rotated by the blades 15 may have a lower or higher viscosity depending on which braking moment is intended to be continuously exerted upon the drag wing. In conformity with the yarn number to be twisted and the desired speed of rotation of the spindle, various liquids may be employed, as for instance, water, oil, glycerine, or the like.

The torque exerted upon the thread 6 by the liquid in the annular housing 11 through the intervention of the bearing hub 7 may be varied by a change in the viscosity of the liquid or by lchanging the angle of attack of the blades 15. To this end, t-he axially directed ends of the blades 15 are provided fwith bearing bolts 16 which are located in the end faces 14 and 17 of the bearing hub 7. The angle of attack of the blades 15 may be adjusted by a wrench by means of which the square heads of the bearing bolts 16 may be turned.

The embodiments illustrated in FIGS. 2 to 6 differ from the embodiment of FIG. 1 in that the annular housing 11 is closed at the top by an annular cover 18 in a liquidtight manner on all sides. According to FIGS. 2 and 4, the housing 11 is by means of a pin 13 eccentrically located on the bottom of the housing 11 non-rotatably mounted upon the hollow shank 1 of the delivery bobbin carrier. According to FIG. 6, the annular housing 11 is formed by the hollow shank itself of the bobbin carrier and is closed at its top side by an annular cover 18.

In the said annular housings 11 according to FIGS. 2 to 6, a blade wheel 19 is freely rotatably journalled for rotation about the respective inner wall of the annular housing. As is shown in FIG. 3, the blade wheel 19 has four blades 15 which similar to the embodiment of FIG. l are adapted to produce turbulence in the liquid in the annular housing 11 when the drag wing or flyer 8 rotates.

The blade wheel 19 according to FIGS. 2 to 6 is rotated by magnetic force through the intervention of the bearing hub 7 of the drag wing or flyer 8 when the latter rotates. To this end, the bearing hub 7 of FIGS. 2, 5 and 6 is provided with an annular collar 20 which extends outwardly partially over the annuar housing 11 and is provided with radially inwardly directed bar magnets 21 and 22 arranged at the same level. These bar magnets 21 and 22 have associated therewith magnetic bodies 24 and 25 which are of opposite polarity and are mounted on two blades 23 of the blade wheel 19. When the drag wing or flyer 8 is rotated by the withdrawing of a thread 6 from the bobbin, so that also the bearing hub 7 resting upon the cover 18 of the annular housing 11 rotates about the spindle pipe 5, the blade wheel 19 will be dragged by the drag wing or yer 8 in view of the magnetic attraction of the bar magnet pairs 21 and 24, and 22 and 25.

The bearing hub 7 according to FIG. 4, similar to the embodiment of FIG. 2, axially rests upon the cover 18 of the annular housing 11 while radially resting against the spindle pipe 5. However, axially directed bar magnets 26 and 27 distributed about the spindle pipe 5 are arranged in the bearing hub 7 of the drag wing or yer 8. These bar magnets 26 and 27 have associated therewith bar magnets 29 and 30 of opposite polarity which are located axially opposite said bar magnets 26 and 27 on the blades of the blade wheel 28. Consequently, the dragging of the blade wheel 28 will be effected by the bearing hub 7 of the drag wing or ilyer 8 by magnetic force in the same manner as described in connection with the embodiments of FIGS. 2, 5 and 6.

The torque exerted by the liquid through the intervention of the blade wheel upon the drag wing or yer may be adapted to the respective circumstances. This may be effected by varying the viscosity of the liquid or by varying the angle of attack of the blades 15 or by varying the volume of the liquid receiving chamber of the annular housing 11. The liquid receiving chamber of the annular housing 11 may be varied, for instance, by axially displacing a portion of the bottom of the annular housing 11 with regard to the blade wheel 19 so that the depth of immersion of the blades into the liquid and thus the torque acting upon the drag wing or yer will be varied. Such an arrangement is illustrated in the two embodiments of FIGS. 5 and 6 respectively.

According to FIG. 5, the annular housing outer wall is extended downwardly by the lower ends of the blade wheel 19 which rests upon a shoulder on the hollow shank 1. The annular outer wall by means of its lower portion extends around the ring 31 which is centrally screwed onto the hollow shank 1. Ring 31 is over a certain length y43 provided with an outer thread. The upper end face of the ring 31 which extends around the hollow spindle shank forms a portion of the annular bottom surface of the annular housing 11. An annular seal 32 is fastened to the end face of ring 31 and seals with regard to the annular outer wall as well as with regard to the wall of the hollow shank 1 in a liquid-tight manner.

Since the end face of the ring 31 extending around the hollow spindle shank forms a portion of the annular bottom surface of the housing 11, the liquid receiving chamber of housing 11 will vary its volume when the ring 31 is turned on the hollow shank 1. If the ring 31 is screwed downwardly, the liquid level in the housing 11 drops so that the blade wheel 19 which rotates as before at the same level about the hollow spindle shank will have its blades 15 immersed into the liquid to a lesser degree and will thus be less effective. Advantageously, for purposes of pressure equalization with the outer air, a bore is provided in the upper end face of the annular housing.

The remarks set forth above in connection with the embodiment of FIG. 5 substantially also apply to the embodiment of FIG. 6. The difference between the arrangement of FIG. 6 and that of FIG. 5 consists primarily in that according to FIG. 6 no annular surface of the bottom of the annular housing is adjustable with regard to the blade wheel. Instead, in the arrangement of FIG. 6 in the hollow shank 1 of the hollow spindle shank there is eccentrically adjustable a piston 33 the upper end face of which, sealed by the seal 34 on the cylinder walls, forms a portion of the bottom of the annular housing 11. The adjustability of the piston 33 as to height is, in conformity with FIG. 6, made possible by a clamping screw 35 which extends through a longitudinal slot 36 in the cylinder wall and is screwed into the lower end of the piston 33. Thus, the piston 33 may be arrested on the cylinder wall at different variable heights.

FIGS. 6a and 6b illustrate two further adjusting possibilities for the piston 33 in the hollow shank 1. According to FIG. 6a, a thread-shaped groove 37 is provided in the piston 33 the circumferential surface of which is knurled in longitudinal direction. A pin 38 screwed into the hollow shaft 1 extends into groove 37. When the piston 33 from the outside through the window 39 is rotated in the outer cylinder wall of the piston 33, an axial displacement of the piston 33 will be effected and thereby a change in the liquid receiving volume of the annular housing 11.

According to the embodiment of FIG. 6b, the lower end of the piston 35 rests by means of a spring 40 on the bottom of the cylinder in a resilient manner, whereas the arresting device forms a bayonet joint. The piston 33 is provided with an arresting pin 41 which is directed radially outwardly from the hollow shank 1 and is adapted to be inserted in any one of the arresting grooves 42 which are arranged one above the other and are interconnected by an axial groove at one end of said grooves 42. The axial displacement of the piston 33 according to FIG. 6b for varying the liquid receiving chamber of the annular housing 11 is thus effected by pivoting the arresting pin 41 from one arresting groove 42 into the axial groove and the displacement of the piston l33 against or under the spring force 40 into another height position, and by again pivoting the arresting pin 41 into another arresting groove 42.

It is, of course, to be understood that the present invention is, lby no means, limited to the particular showing in the drawings but also comprises any modifications within the scope of the invention.

What I claim is:

1. In combination with a hollow spindle shank having a spindle pipe protruding upwardly therefrom in axial direction of said shank for passing a thread therethrough, a flyer structure which includes: annular housing means having an inner tubular wall extending around said spindle pipe, said annular housing means resting on said spindle shank and forming a liquid receiving Vessel, blade wheel means having blades extending into said annular housing means, said blade wheel means being rotatable about said inner tubular wall of said housing means, and yer means extending radially outwardly from said blade wheel means and having its outer end provided with a thread guide and having its inner end operatively connected to said blade wheel means for rotating the latter in response to a rotation of said flyer means.

2. A flyer structure according to claim 1, in which said blade wheel means includes a hub having the inner end of said yer means pivotally connected thereto for pivotal movement of said yer means in a vertical plane, said hub having a tubular extension rotatably journalled on said tubular wall.

3. A yer structure according to claim 1, in which said housing means is closed on all sides in a uid tight manner, and in which said blade wheel means is freely rotatably arranged in said housing means, said blade wheel means and said flyer means respectively being provided with cooperating magnetic means for rotating said blade wheel means in response to a rotation of said yer means.

4. A flyer structure according to claim 3, in which the inner end of said yer means comprises a hub substantially coaxially arranged with regard to said blade wheel means and having a collar surrounding said housing means, magnetic means being supported by said collar for cooperation with the magnetic means of said blade wheel means.

5. A flyer structure according to claim 4, in which the magnetic means supported by said hub are substantially evenly distributed around said spindle shank, and in which the magnetic means of said blade wheel means extend in axial direction of the latter and are of opposite polarity with regard to the cooperating magnetic means of said hub.

6. A flyer structure according to claim 1, which in-v 7. A yer structure according to claim 6, which in-y cludes adjustable pivot means connected to end faces of said blades and operable from the outside of said housing means for selectively adjusting the angle of attack of said blades.

8. A tlyer structure according to claim 1, in which said housing means includes means operable selectively for increasing and decreasing the volumetric capacity of said housing means.

9. A yer structure according to claim 8, in which at least a portion of the bottom of said housing means is adjustable in the axial direction of said blade wheel means.

10. A yer structure according to claim 9, which includes an axially adjustable annular member extending around said hollow spindle shank and forming at least a portion of the bottom of said housing means, said housing means having its outer wall extending around the outer peripheral surface of said annular member in a uid tight manner.

11. A yer structure according to claim 9, in which said hollow shank forms a portion of said housing means, and which includes plunger means eccentrically located with regard to the axis of said hollow shank and adjustable from the outside of said spindle shank toward and away from said blade wheel means, that end face of said plunger means which is closest to said blade wheel means forming a portion of the bottom of said housing means, means being provided for sealing said plunger means relative to the respective adjacent outer wall of said housing means.

12. A flyer structure according to claim 11, in which the outer hollow shank wall portion forms a portion of the cylinder wall for said plunger means and is provided with a slot extending in the direction of possible movement of said plunger means, and which includes arresting means extending from the outside of said shank through said slot into engagement with said plunger means for selectively arresting the same at a desired level to thereby vary Vthe level of a portion of the bottom of said housing References Cited UNITED STATES PATENTS l/ 1965 Kreuschmer 57-58.83 9/1968 Heimes et al 57-58.83

JOHN PETRAKES, Primary Examiner U.S. Cl. X.R. 57--59, 67, 106 

